Description of Company and Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2019 USD ($) Division	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of business segments | Division	2
Goodwill [Line Items]
Goodwill, Impairment Loss	$ 0	$ 0	$ 0
Research and Development [Abstract]
Research and development costs	$ 404,000,000	390,000,000	360,000,000
Cash and Cash Equivalents [Abstract]
Cash equivalents, maximum maturity (in months)	3 months
Goodwill [Roll Forward]
Goodwill	$ 2,825,000,000	2,693,000,000
Current year acquisitions	11,000,000	105,000,000
Purchase price adjustments for previous acquisitions	(2,000,000)	27,000,000
Other	(22,000,000)
Goodwill	$ 2,812,000,000	2,825,000,000	2,693,000,000
Minimum
Finite-lived intangible assets [Abstract]
Useful life of finite-lived intangible assets (in years)	1 year
Maximum
Finite-lived intangible assets [Abstract]
Useful life of finite-lived intangible assets (in years)	28 years
Completion and Production
Goodwill [Roll Forward]
Goodwill	$ 2,055,000,000	1,922,000,000
Current year acquisitions	6,000,000	99,000,000
Purchase price adjustments for previous acquisitions	(1,000,000)	34,000,000
Other	(21,000,000)
Goodwill	2,039,000,000	2,055,000,000	1,922,000,000
Drilling and Evaluation
Goodwill [Roll Forward]
Goodwill	770,000,000	771,000,000
Current year acquisitions	5,000,000	6,000,000
Purchase price adjustments for previous acquisitions	(1,000,000)	(7,000,000)
Other	(1,000,000)
Goodwill	$ 773,000,000	$ 770,000,000	$ 771,000,000